This node creates a terrain using a Perlin noise generator, one of the generators most frequently used to create a terrain.
To add a Perlin noise node, right click in the Graph Editor and select Create Node > Terrain Transformation > Perlin noise.
Double click on the node to open its parameters:
The Scale parameter determines the horizontal scale of the noise. A smaller coefficient gives a higher density of "bumps"; a larger coefficient gives a lower density of bumps.
Use the slider to set the horizontal scale of the terrain.
In the example below, the scale is decreased and the terrain has more bumps.
The Height parameter sets the vertical scale of the heights. Use the slider to set the terrain height.
A larger coefficient increases range of the height of the vertices. A smaller coefficient decreases range of the height of the vertices, as shown in the example below.
Use the sliders to change the parameters:
This parameter pans the terrain in the X and Y axes.
Enter a value in the X ands Y fields or use the arrow keys to pan horizontally and vertically.
This parameter sets the value of the noise generation seed. Changing the seed value, even very slightly, completely changes the terrain shape.
Do one of the following:
Use the slider to rotate the terrain from -180 to 180 degrees.
The example below shows the terrain rotated 180 degrees:
Use the radio button to chose the underlying algorithm.
Watch our Perlin noise node video tutorial.
|Terrain size||See "Part common to all generator nodes"|
|Scale||Determines the horizontal scale of the noise.
More this coefficient is small, the higher the density of "bumps"
|Height||Sets the vertical scale of the heights.
More this coefficient is large, the greater the height of the vertices range
|Number of levels||This corresponds to the number of levels of detail. Each level
has a frequency twice as much as the previous one.
|Attenuation||This corresponds to the attenuation of a level of detail
against the previous one. If this value is low, the high-frequency
levels of detail dominate and generate a high-frequency noise.
If this value is high, the high-frequency levels of detail are less visible.
|X, Y||Determines the translation values of the terrain|
|Pans the terrain in X and in Y|
|Seed||Initial value of the noise generation seed.
Changing the value of the seed (even very slightly) completely changes the terrain shape
|Value||Edits the value of the seed|
|Generate||Randomly generates a new seed|
|Rotation||Rotates the terrain from -180 to 180 degrees|
|Computation mode||Changes the algorithm to use either a squared noise or a smooth noise|
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